During the electrolysis of green nickel(II) sulfate solution using nickel electrodes, the anode gets smaller, the cathode gets larger, and the solution remains the same shade of green.
Give the reason for each of these observations.
83 exam-style questions on Edexcel GCSE Chemistry 4.2 Electrolytic processes, covering 4.2.1 Electrolytes and the process of electrolysis, 4.2.2 Products of electrolysis using inert electrodes, 4.2.3 Half equations, oxidation and reduction in electrolysis, and 4.2.4 Electrolysis of copper sulfate and purifying copper. Each one has a worked solution and a mark scheme showing where the marks go.